Forbes has a list of 85 great 20th century business innovations. A copy is below. Forbes also has a list of failures, like picture telephones and 3D movies.

1917	Sneakers	1918	Mass Spectrometer	1921	Tetraethyl Lead	1923	Business Management
1923	Multiplane Camera	1924	Frozen Food	1924	Mutual Fund	1925	Bell Telephone Laboratories
1926	Rocket Engine	1927	Television	1928	Penicillin	1929	Synthetic Rubber
1930	Jet Engine	1933	Frequency Modulation	1933	Wallboard	1934	Nylon
1934	Value Investing	1935	United Auto Workers	1937	Pulse-Code Modulation	1937	Blood Bank
1938	Xerography	1956	Ampex VRX-1000	1956	Containerized Shipping	1956	Disk Drive
1956	Fiber Optics	1958	Implantable Pacemaker	1958	Laser	1947	Tupperware
1948	LP	1949	Magnetic Core Memory	1950	Diners Club Card	1951	Levittown
1951	The Pill	1952	Holiday Inn	1952	The Conglomerate	1952	Thorazine
1954	Fortran	1954	Polio Vaccine	1955	Fast Food	1959	Integrated Circuit
1959	Three-Point Seat Belt	1961	Pampers	1962	Modem	1962	Point-of-Sales Data
1962	Telstar I	1964	Mainframe Family	1965	Consumerism	1968	Mouse
1969	Automated Teller Machine	1969	Charge-Coupled Device	1969	The Internet	1970	Compact Disc
1970	Relational Database	1971	Answering Machine	1971	Microprocessor	1939	Automatic Transmission
1939	Helicopter	1940	Radar	1942	Electronic Digital Computer	1945	Nuclear Power
1947	Instant Photos	1947	Cellular Phone	1947	Microwave Oven	1947	Transistor
1972	Computed Tomography Imaging	1972	E-Entertainment	1972	Ethernet	1972	UNIX/C Programming
1973	Discount Brokerage	1974	Catalytic Converter	1974	Index Fund	1976	Personal Computer Chic
1976	Recombinant DNA	1977	Cash Management Accounts	1977	Original-Issue Junk Bonds	1979	Spreadsheet
1984	Customized Mass Retail	1984	Liquid Crystal Displays	1987	Mevacor	1987	Prozac
1991	World Wide Web	1995	Internet Business	1995	Protease Inhibitors	1998	Viagra
2000	Automated Sequencing Machine